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Add 4/45 and 15/20

4/45 + 15/20 is 151/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180
  2. For the 1st fraction, since 45 × 4 = 180,
    4/45 = 4 × 4/45 × 4 = 16/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    15/20 = 15 × 9/20 × 9 = 135/180
  4. Add the two fractions:
    16/180 + 135/180 = 16 + 135/180 = 151/180

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